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Finding the Fourth Proportional to 239,745.80, 359,489.10 and 99,518.60

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Solution

The fourth proportional to 239,745.80, 359,489.10 and 99,518.60 is: 149,224.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    239,745.80 : 359,489.10 = 99,518.60 : x
  2. Step 2: Convert to fraction form
    239,745.80/359,489.10 = 99,518.60/x
  3. Step 3: Cross multiply
    239,745.80x = 359,489.10 × 99,518.60
  4. Step 4: Simplify right side
    239,745.80x = 35,775,851,947.26
  5. Step 5: Solve for x
    x = 35,775,851,947.26/239,745.80
  6. Step 6: Final answer
    x = 149,224.10

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.